| 不同钝化剂对酸性土壤中重金属的钝化修复研究进展 |
| |
| 引用本文： | 周春海,张振强,黄志红,肖选虎,杨雍康,祖艳群,李元.不同钝化剂对酸性土壤中重金属的钝化修复研究进展[J].中国农学通报,2020,36(33):71-79. |
| |
| 作者姓名： | 周春海 张振强 黄志红 肖选虎 杨雍康 祖艳群 李元 |
| |
| 作者单位： | 1.云南农业大学资源与环境学院,昆明 650201;2.圣清环保股份有限公司,昆明 650093 |
| |
| 基金项目： | 国家重点研发计划项目“纵向岭谷区金属采选场地及周边土壤污染防治技术研发与模式构建”(2018YFC180260);云南省重点研发专项“重金属污染控制及农产品安全生产关键技术研究”(2018BB017);云南省重点研发专项“云南典型金属矿区小流域生态保护与修复技术研究与应用示范”(2019BC001-04) |
| |
| 摘 要： | 化学钝化修复技术是土壤重金属污染修复的重要方法之一,其钝化成本低、效率高、种类丰富,具有良好的前景。随着目前环境因素复杂化,土壤酸化日益严重,酸性土壤中重金属也变得多种多样,钝化修复能够较好的响应土壤环境变化,对酸性土壤中重金属污染的土壤修复前景较好。本文对单一型及复合型钝化剂的种类、作用原理、存在的问题进行了总结归纳,并分别对其各类型钝化剂研究进展及现状进行综述。单一类钝化剂主要分无机类和有机类钝化剂,其中无机类钝化剂种类较多,应用较广,主要通过吸附、络合、共沉淀等方式钝化土壤中重金属;复合型钝化剂主要有无机—无机、无机—有机、有机—有机型,其作用原理与单一型钝化剂相似,与复合型钝化剂相比单一型钝化剂对多重金属污染土壤的修复效果不明显。与此同时针对目前酸性土壤中镉、铅、砷的钝化修复研究进展进行综述,酸性土壤主要通过调节土壤pH来对其修复,基于此总结归纳了酸性土中3种重金属的最适钝化剂种类及其作用机理,针对当前重金属污染土壤修复存在的问题进行了展望,以期对钝化剂修复重金属污染的土壤提供参考。
|
| 关 键 词： | 土壤 重金属 酸性 钝化剂 单一型 复合型 |
| 收稿时间： | 2019-12-09 |
Passivation and Remediation of Heavy Metals in Acid Soil with Different Passivators: A Research Progress |
| |
| Zhou Chunhai,Zhang Zhenqiang,Huang Zhihong,Xiao Xuanhu,Yang Yongkang,Zu Yanqun,Li Yuan.Passivation and Remediation of Heavy Metals in Acid Soil with Different Passivators: A Research Progress[J].Chinese Agricultural Science Bulletin,2020,36(33):71-79. |
| |
| Authors: | Zhou Chunhai Zhang Zhenqiang Huang Zhihong Xiao Xuanhu Yang Yongkang Zu Yanqun Li Yuan |
| |
| Institution: | 1.College of Resources and Environment, Yunnan Agricultural University, Kunming 650201;2.Shengqing Environmental Protection Co., Ltd., Kunming 650093 |
| |
| Abstract: | With its low passivation cost, high efficiency, rich variety and good prospects, chemical passivation repair technology is one of the important methods for soil heavy metal pollution restoration. As current environmental factors become more complex and soil acidification becomes more serious, heavy metals are common and diverse in acidic soil. Passivation and remediation can better response to changes of soil environment, and have a good prospect in the restoration of acid soil polluted by heavy metals. In this paper, the types, working principles and existing problems of single and composite passivators are summarized, and the research progress and current status of each type of passivators are reviewed. The single type of passivators is mainly divided into inorganic and organic. Among them, inorganic passivators are various and widely used, mainly passivated the heavy metals in the soil by adsorption, complexation, coprecipitation and so on. The composite passivators mainly include inorganic-inorganic, inorganic-organic and organic-organic, with the action principle similar to that of single-type passivators. Compared with composite passivators, the single-type passivators have a less significant result in the restoration of multi-metal contaminated soil. At the same time, the research progress of passivation and remediation of cadmium, lead and arsenic in acid soil is reviewed. The acid soil is mainly restored by adjusting soil pH. Based on this, the optimum passivator type and mechanism of the three heavy metals in acid soil are summarized, and the types of agents and their mechanism of action in heavy metal contaminated soil remediation are discussed, to provide references for the use of passivators to restore heavy metal contaminated soil. |
| |
| Keywords: | soil heavy metal acid passivation agent single type composite type |
|
| 点击此处可从《中国农学通报》浏览原始摘要信息 |
| 点击此处可从《中国农学通报》下载免费的PDF全文 |
|
